Scale platform lifting device



Nov. 24, 1931. JAENICHEN 1,833,576

SCALE PLATFORM LIFTING DEVICE Filed July 1, 1950 7 p \l 22 z/ .20 I 7 20INVENTOR BY Lou A's 0620/6/78.

A TTORNEY.

Patented Nov. 24, 1931 1 UNITED STATES PATENT OFFICE LOUIS J'AENICHEN,OF SPRINGFIELD TOWNSHIP, OAKLAND COUNTY, MICHIGAN, AS-

SIGNOR TO THE STANDARD COMPUTING SCALE COMPANY, OF DETROIT, MICHIGAN,

A CORPORATION OF MICHIGAN SCALE PLATFORM LIFTIN G DEVICE Applicationfiled July 1,

].0 on, but disadvantages in such means have been found due to the factthat they looked the platform in position upon the pivots or knifeedges.

An object of this invention, therefore, is a means for elevating theplatform off the pivots and locking the platform in its elevatedposition.

Afstill further object is a platform lifting and locking'deviceincluding aitoggle linkage whichis operable by a handle, convenientlyplaced adjacent the platform.

A still. further object is a scale platform elevating and locking meansincluding toggle linkages, the scale proper having guides thereon fordirecting movement of parts of the linkages.

Still further objects will readily occur to those skilled in the artupon reference to the following description and the accompanyingdrawings in which Fig. 1 is a sectional view of a scale platform withthe device of the invention in place.

Fig. 2 is a plan view to smaller scale, parts being cut away.

As indicated in the drawings, the base of the scaleis provided with theusual platformll supported, in the usual manner, upon knife edges 12 ona. weighing lever 13. The base 10 is further providedywith a pluralityof lugs 14 and a plurality of guides 15, the

latter having guiding apertures 16 for pur-,

poses to be presently'described.

Pivotally connected to the lugs 14 are links 18, which in turn arepivotally connected to the links 19, and 20, forming a toggle at thepoint 21. On the upper end of each link 19 is a block 22, which isslidable in an aperture 16, previously described. Connecting each 59pair of links 20 is a crank 24 mounted upon 1930. Serial No. 465,128.

and keyed to a shaft 25, upon which is disposed the handle 26.

As observed best from Fig. 2, there are provided four sets of links 18,19 and 20, and all of the links 20 are connected to one another throughthe cranks 24 and the elongated shaft 25, so that all of the links workin unison when the handle 26 is moved.

The operation of the device will readily be observed. When the handle 26is moved from left to right (Fig. 1) crank 24 rotates to a horizontalposition and links 20 are thrust outwardly and horizontally until theyare disposed in straight'line alignment with the crank 24. Toggleforming links 18,19 correspondingly move so that blocks 16 abut thelower surface of the platform 11, elevating it off its pivots or knifeedges 12.

It will be observed that when the handle 26 has been moved to itsextreme right hand position (Fig. 1) the members 20, 24 and 26 will bein straight line alignment and the platform will be locked in itselevated posi tion.

Now having described the invention and the preferred embodiment thereof,it is to be understood that the said invention is to be limited, not tothe specific details herein set forth, but only by the scope of theclaim which follows:

What I claim is:

In combination, a horizontal scale platform supported on knife edges,and means to lift the platform vertically, in a straight line, off saidknife edges and to lock it in its elevated position, said meansincluding toggle forming linkages connected by a handle-operatedcrank,t-he linkages having parts engaging said platform and movablevertically in straight lines, the scale being provided with stationaryguides for vertically movable parts of said linkages.

LOUIS JAENICHEN.

